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Westamerica Bank Routing Numbers

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In our record, Westamerica Bank has a total of 3 routing numbers.

Routing Number	Process FedACH	Process Fedwire	Location	Registered Name
121140218	Y	Y	Suisun City, CA	Westamerica Bank
121141000	Y	N	Suisun City, CA	Westamerica Bank
121141615	Y	N	Suisun City, CA	Westamerica Bank

A routing number is a nine digit code, used in the United States to identify the financial institution. Routing numbers are used by Federal Reserve Banks to process Fedwire funds transfers, and ACH(Automated Clearing House) direct deposits, bill payments, and other automated transfers. The routing number can be found on your check.

The routing number information on this page was updated on Feb. 17, 2020

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